00410nam a22001577a 4500003000400000008004100004082001800045100002300063245004600086260003200132300001000164502001800174650002900192650001900221650001200240OSt260611b        |||||||| |||| 00| 0 eng d  a631.372bS48T  aSinha, Abhay Kumar  aTractor Utlization in Bihar- A Case Study  aPusa, SamastipurbRAUc1993  a108P.  bM.Tech.d1993  aAgricultural Engineering  aFarm Machinery  aM.Tech.